John henry darby



No. s|s,a|4. Patented Jan.- 3|, I899.

J. H. DARBY.

CENTBIFUGAL MACHINE. (Application filed Oct. 20, 1898.)

(No Model.)

Wm v MEIER m2 NORRIS Firms co PHOTG-LITHCL. WASHINGTON. n c

UNITED STATES PATENT rrrcn.

JOHN HENRY DARBY, OF BRYMBO, ENGLAND.

CENTRIFUGAL MACHINE.

SPECIFICATION forming part of Letters Patent No. 618,814, dated January 31, 1899. Application filed October 20, 1898. Serial No. 694,102. (No model.)

T0 on whom it may concern.-

Be it known that I, JOHN HENRY DARBY, a subject of the Queenof Great Britain, residing in Brymbo, near WVrexham, in the county of Denbigh, Principality of Wales, England, have invented certain new and useful Improvements in Apparatus for Depriving Coal, Slack, and other Material of Surplus Moisture, of which the following is a specification.

This invention relates to apparatus for separating the surplus water adhering to small coal, slack, and the like. It is best described by aid of the accompanying drawing, showing a section of my apparatus.

In the drawing, A is the inlet-hopper for moist slack; B, a shaft passing through same; 0, a worm on shaft B drawing the slack into the whizzer; D, a conical wrought-iron cone formed of one-quarter-inch plates suitably stayed with three or more studs E, attached to a collar F on shaft B. On this collar, too, a wrought-iron disk G is fixed, projecting, as shown, to near the periphery of the cone D, but allowing sufficient space for the slack to pass. II is a similar disk. In the drawing there are only two, but in some cases I may have three or four.

I is a further set of supporting-studs, J an angle-iron, and K another collar on the shaft B. These two are connected by the studs I.

L is a conical ring fitting against the cone D. Between ring L and cone D and the projecting ends of the studs I and the angle-iron J perforated sheets M are fixed. These perforated sheets are further supported at intervals by bars N.

O is an outside conical stationary cover, and P the end stationary cover; Q, the outlet for water, and R the outlet for dried slack. As the outlet R is liable to be choked up, I place a shaft S, driven by pulley T, passing through this outlet, with beaters U U thereon. These continually revolving keep the outlet open.

The mode of action is as follows: The slack or other material is fed into the inlet A and is passed by the worm G into the revolving cone D M. The slack immediately adjoining the perforated sheets M is sufficiently dried and rapidly passes away into the space W and the exit R. The slack, however, farther away from the perforated sheets comes in contact successively with the disks G H. The remaining slack is thrown by the revolving drum against the disks, and striking them approximately at right angles is disintegrated or pulverized, and so rendered suitable for coking without further grinding the slack.

It is further deflected back onto the casing, is then thrown against the next disk, and again deflected back onto the casing, and so on until it reaches the extremity at angle-iron J.

Angle-ironJ, besides acting as askeleton on which to fix the perforated sheets, also sheds off any water which would have a tendency to creep up the outside of the perforated sheets and enter the space W. It throws the water off into the outlet Q. It will thus be seen that in exact proportion as the layers of slack are distant from the perforated plates they are impeded in their travel, and so for a longer time are exposed to the centrifugal action,

whereas the slack, which can easily get rid of its water, is exposed for a shorter time to the centrifugal action.

A machine made on this principle and from which the drawing has been taken has been at work for some time at the Broughton Solvay coke ovens. It is run at approximately four hundred and thirty revolutions per minute and treats eight tons of slack an hour, entering with about eighteen per cent. of water and leaving with about six per cent. to eight per cent.

Although I have described the actual apparatus, I do not bind myself to this exact ar rangement, as it is obvious that the shaft B can be horizontal, inclined, or even vertical, as the slack will in any case creep up the sloping sides. In practice, however, a horizontal or slightly-inclined shaft appears the most efficacious.

I declare that what I claim is- 1. In combination with a suitable casing provided with a feed-opening at one end; a shaft extending through said frame; a frustoconical shell mounted upon said shaft, comprising an imperforate section located adjacent to the feed-opening, and aperforate section connected thereto and extending toward the discharge end of the casing; and disks secured upon the shaft within the shell, substantially as and for the purpose described.

2. In a centrifugal separator, the combination of a suitable casing provided with a feedopening at one end, and a discharge-opening at its opposite end; a shaft mounted in said casing and extending through said feed-opening; a worm carried by that portion of the shaft within said feed-opening; a frusto-conical shell mounted upon the shaft within the casing, comprising an imperforate section D, and a perforate section M connected thereto and extending toward the discharge-opening; and disks G and 11 mounted upon the shaft.

3. In a centrifugal separator, the combination of a suitable casing provided with a feedhopper A, a liquid-discharge opening Q, and a discharge-exit R a shaft extending through the casing and the hopper; a frusto-conical shell mounted upon the shaft Within the casin g, comprising an imperforate section D and a perforate section M connected thereto and extending toward the exit R; disks Gr and II also secured upon the shaft Within the shell;

and beaters located within the dischargeexit R.

4. In a centrifugal separator, the combination of a suitable casing provided with a feedhopper A, a liquid-discharge opening Q and an exit R; a shaft extending through the easing and the hopper; a worm carried by the shaft within the hopper; a frusto-eonioal shell mounted within the casing upon the shaft, comprising imperforate section D and perforate section M; disks G and H secured upon the shaft Within the shell; deflectingrim J carried at the outer end of section M; and beaters located within the dischargeexit R.

In Witness whereof I have hereunto signed my name, this 11th day of October, 1898, in the presence of two subscribing Witnesses.

JOHN HENRY DARBY.

\Vitnesses:

WILLIAM H. T. LITTLEBOY, RICHARD J ONES. 

